Pettefis



(No Model.) 2 SheetsSheet l G. P. HILL & A. L. WASHBURN.

COIN CONTROLLED WEIGHING SCALE.

No. 889,223. Patented Sept. 11, 1888.

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UNITED STATES PATENT rains.

ASSIGNORS OF C(Tlfill'l.

COIN-CONTROLLED VVEiGHlNG SCALE.

SPECIFICATION forming part of Letters Patent No. 389,228, datedSeptember 11, 1888.

Application filed August 10, 1887.

F aZZ whom it may concern.-

Be it known that we, GEORGE P. HILL and ALBERT L. XVASHRURN, bothcitizens of the United States, residing at Niantic, in the county of NewLondon and State of Connecticut, have invented certain new and usefulImprovements in \Veighing-Scales, of which the following is aspecification.

Our invention relates to improvements in weighing-scales of the class inwhich the weight of the person is shown by the introduction of a coininto the machine; and the objects of our invention are to simplify theconstruction, to positively connect the dial and index with the weighingmechanism, and in general to inr prove the efficiency of the machine.

In the accompanying drawings, Figure l is a front elevation of the upperportion of our weighing-scales with the front board removed. Fig. 2 is avertical section on line so :0 of Fig. 1, showing most of the parts inelevation. Figs. 3 and at are detail views illustrating the trippingmechanism. Fig. 5 shows the coinreceiver and one tripping-lever arrangedin proper relation to said receiver. front view of a portion of ourmachine, show ing the dial as it appears when a person is on theweighing-platform and has deposited a coin in the machine. Fig. 7 isahorizontal section (on a larger scale than Figs. 1 and 2) of the case,with a plan view of the inclosed meclr anisni. Fig. 8 is a horizontalsection of my machineon a linejust above the shaft ill. Fig. 9 is afront view of a portion of the pivotal bar, together with a sectionalview of its fulcrum; and Fig. 10 is a plan view of one end of thepivoted bar and the coin-receiver attached thereto.

A designates the case, of any desired con struction, having mount-edtherein the frame B, spring 0, sliding rack D, and pinion E, all ofordinary construction, and connected by the rod F with any ordinaryplatform and weighinglevers in any ordinary manner.

As in other weighing-scales, the pinion E has attached to it theindicator-shaft a, to which shaft we secure a revolving dial,G,graduatedinto any desired number of divisions, according to the capacity of thescale-as, for instance, from zero to three hundred pounds. In the frontpart of the case A, at the proper Fig. 6 is a Serial No. QMLSSR.(Noniorleh) point, there is an opening, I), which reveals one edge ofthe dial, as shown in Fig. 6, said opening also being indicated by theoval figure in broken lines in Fig. 1. In connection with this openingand dial we ailix to the front part of the case a stationary index orpointer, 0,

Fig.6. The mechanism thus far described constitutes a complete weighingmachine which will indicate correctly the weight of a person do or otherobject placed upon the platform of the scales. In order that this weightmay be read only when a coin is deposited in the machine, we provide apivoted bar, (I, hung upon a suitable fulcrum, e, and counterbalanced byan adjustable weight, f, so that said bar in its normal position comesover the front edge of the dial at the point where the opening 1) andindex care located, so as to conceal the figures indicated on the dialfrom sight. This pivoted bar (Z is provided at one end with acoin-receiver, g, the same being located im mediately underneath thechute h, for directing a coin into the coin-receiver g. Thisc0inreceiver is shown in vertical section in Fig. 5, and has an opentop,while at the botionnupon one side, the wall inclines downward towardthe oblique exit j, Fig. 5. A stop, It, is pivotcd, as at 7.:, Fig. 5,to one of the upper corners of the coiirreceiver g, with an angular 8)portion of said stop partially closing the exit j, so that a coin of agiven size will not pass therefrom until said stop is lifted out of theway, the broken circle in Fig. 5 indicating the outline of such coin.Said stop 7; is forked at its pivoted end,and its two arms extend alongby the sides of the open top, so that it does not obstruct the upper endof the coin-receiver. The pivoted bar (Z is so balanced that when thereceiver 9 is empty it will remain in the position shown in Figs. 1, 2,and 5; but by the introduction of a proper-sized coin into the receiverthe bar will swing on its fulcrum into the position indicated by brokenlines in Figs. 1 and 6, the broken line in the latter fig are indicatingthe upper edge of said bar. This uncovers the indicator and enables theperson to read his weight.

\Vithin the frame of the weighing mechanism,in suitable bearings, wehang the shaft in, 100 to the ends of which we secure the trippingarms aand 0. The arm n is immediately back of the rack D, and is provided witha springpressed slide, 9, the spring having a tendency to press theslide outward against the rack. On the back of the rack a recess, D, isiormed in such a position that when zero is indicated this recess willbe immediately opposite the slide 12, and consequently the slide willnot bear against the rack at all, but is free to drop downward until itsmotion is limited by the arm a coming in contact with the stop q. (SeeFigs. 3, 4., and 8.) Thus when zero is indicated the tripping-arms n and0 will fall to their lowermost position. These arms are both rigidlyaffixed upon the shaft in; but one or both of them may be adj ustablethereon and held in position by a set-screw. \Vhcn aperson steps uponthe platform of the scales, the rack D is pulled downward,and sosoon asthe recess in the back of said rack passes the slide p the solid part ofthe rack, bearing on the beveled upper side of said slide, pushes saidslide inward against its spring, while the stop (1 prevents the armcontaining said slide from moving farther downward. A coin is thendeposited in the chute h, whence it falls into the coin-receiver g, andcauses the end of the bar (1 containing said receiver to fall into aposition where the end of the pivoted stop It will be only slightlyabove the outer end of the tripping-arm 0, as indicated by the brokenlines in Fig. 1, the movement of the bar (1 being limited by thestop-lugs on the case immediately above and below the counterpoise orweightf. The pivoted bar (1 is thus carried downward, so as to revealthe weight indicated on the dial, as shown in Fig. 6. As soon as theweight upon the platform is removed, or even partially removed, so as toallow the rack D to rise a little, the spring pressed slidep, pressingagainst said rack, will rise with said rack into the position shown inFig. 4, thereby rocking the shaft 177. and elevating the tripping-arm 0suificiently to raise the pivoted stop It high enough to release thecoin, after which release the pivoted bar 41 is returned to its normalposition. No weight can be read again until another coin is deposited inthe machine.

\Ve hereby disclaim the combination of a disk adapted to be rotatedunder the force or weight applied to the apparatus, an iuclosingcase,its front having an opening through it to expose the graduations on thedisk, a passage adapted to receive a coin of certain size, a

cover for said opening, and an obstruction in said passage in connectionwith said cover, substantially as described, and whereby the coin sointroduced will strike the said obstruction and by its weights removethe cover from said opening and expose the graduations on the disk.

We claim as our invcntiou- 1. In a weighing-machine, the combination ofthe rack having a recess on one side-as, for instance, the back side-therockshaft m. tripping-arms n 0, mounted on said shaft, and a stop tolimit their downward movement, the spring-pressed slide carried by thearm n and adapted to bear against the rack, and the stop of thecoin-receiver within the path of the tripping-arm 0, substantially asdescribed, and for the purpose specified.

2. In a weighingmachine, the combination of the coin-receiver having anopen top for the entry of the coin and at a point below said top adischarge aperture, the stop It, having a forked end, the two arms ofwhich extend along by the sides of said open top, said top being pivotedto the upper part of said coinreceiver and having its lower end partlycovering the dischargeaperture, and tripping mechanism for contactingwith thefree end of said step and operating it to free saiddischarge-aperture, substantially as described, and for the purposespecified.

3. The combination of a weighing-machine and its indicator with acovering device whose movement covers and uncoverstheweightindicated,the(-oin-receivernecessarily moving with said coveringdevice, thepivoted stop 7;, mounted on said coin-receiver, the swingingtrippingarm 0 for contacting with the free end of the stop, said armbeing set at a pointjust below the lowest point in the downward movementof said stop, and mechanism connecting said arm with that portion of theweighing mechanism which moves under the influence of a persons weight,whereby the tripping-arm 0 is thrown upward against said stop to raiseit and release the coin by the upward movement of said part of theweighing mechanism, substantially as described, and for the purposespecified.

GEORGE P. HILL. ALBERT L. \VASHBURN.

\Vi tn esses:

M. W. COMSTOCK, L. O. CoMs'rocK.

